若
为双曲线
:
(
,
)右支上一点,
,
分别为双曲线
的左顶点和右焦点,且
为等边三角形,双曲线
与双曲线
:
(
)的渐近线相同,则双曲线
的虚轴长是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ecbec8422e7d36b2ee029596610a48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c0c25b2c551373525eb39a4ddabfeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a30acc465e55334804cbc53856489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
更新时间:2018-01-09 17:56:07
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解题方法
【推荐1】已知双曲线
的一条渐近线方程为
,则双曲线C的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5c2e64358e0ec7aa142c336d970306.png)
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【推荐2】已知双曲线
的一条渐近线的倾斜角为60°,且与椭圆
有相等焦距,则C的方程为_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8cd4b14645459c76f8cf7765ff8dfa.png)
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【推荐1】若直线
与双曲线
的两交点在
轴上的射影落在该双曲线的两个焦点上,则该双曲线的离心率是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5778234714c59dfae9501e7bb61506a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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【推荐2】已知双曲线的顶点到渐近线的距离为2,焦点到渐近线的距离为6,则该双曲线的离心率为_______ .
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